| Geant4 Cross Reference |
1 =========================================
2 Geant4 - wvalue example
3 =========================================
4
5 README file
6 --------------------
7
8 CORRESPONDING AUTHO
9
10 S. Incerti (a, *)
11 a. LP2i, IN2P3 / CNRS / Bordeaux University, 3
12 * e-mail: incerti@lp2ib.in2p3.fr
13
14 ---->0. INTRODUCTION.
15
16 The wvalue example shows how to calculate w in
17 for e- using the Geant4-DNA physics processes
18
19 w is computed as the ratio of the incident par
20 and the total number of ionisations.
21
22 It is adapted from the svalue example.
23
24 This example is provided by the Geant4-DNA col
25
26 These processes and models are further describ
27 http://geant4-dna.org
28
29 Any report or published results obtained using
30 cite the following Geant4-DNA collaboration pu
31 Med. Phys. 51 (2024) 5873–5889
32 Med. Phys. 45 (2018) e722-e739
33 Phys. Med. 31 (2015) 861-874
34 Med. Phys. 37 (2010) 4692-4708
35 Int. J. Model. Simul. Sci. Comput. 1 (2010) 15
36
37 This example is presented in the following pap
38 Med. Phys. 42 (2015) 3870-3876
39
40 ---->1. GEOMETRY SET-UP.
41
42 The geometry is a 1 m radius sphere of liquid
43 material). Particles are shot randomly from th
44
45 Radius of the sphere, physics constructor and
46 controlled by the wvalue.in macro file.
47
48 The PrimaryGeneratorAction class is adapted (G
49 in order to enable generic physics list usage
50 (empty modular physics list).
51
52 ---->2. SET-UP
53
54 Make sure G4LEDATA points to the low energy el
55
56 The code can be compiled with cmake.
57
58 It works in MT mode.
59
60 ---->3. HOW TO RUN THE EXAMPLE
61
62 In interactive mode, run:
63
64 ./wvalue wvalue.in
65
66 The wvalue.in macro allows a full control of t
67
68 ---->4. PHYSICS
69
70 You can select Geant4-DNA physics constructor
71
72 A tracking cut can be applied if requested.
73
74 ---->5. SIMULATION OUTPUT AND RESULT ANALYSIS
75
76 The output results consist in a text file (wva
77 - the energy of incident particles (in eV)
78 - the mean number of ionisations
79 - its rms
80 - the w value (in eV)
81 - its rms (in eV)
82
83 Note: rms values correspond to standard deviat
84
85 In addition, another macro (histo.in) is also
86 a series of histograms:
87 - histogram #1 : nb of ionisation interactions
88 - histogram #2 : total energy deposited in abs
89 - histogram #3 : true track length of the prim
90 - histogram #4 : true step size of the primary
91 - histogram #5 : projected range of the primar
92 - histogram #6 : true track length of charged
93 - histogram #7 : true track length of charged